/Engine/Source/Runtime/Engine/Classes/Engine/SkeletalMeshLODSettings.h
Set InMesh->LODInfo with this LOD Settings return # of settings that are set. Return N for 0-(N-1).
int32 SetLODSettingsToMesh ( [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * InMesh ) const